Public beta or developer? If the former, you have to install the beta profile on the device... If the latter, get the ipsw the same way you were getting it before and install via iTunes as done previously.

I was on 9.1 Beta on my old device and now I can't restore my backup because my new phone won't update to 9.1.

I am not a developer and had been on a Beta 9.0 on my old phone.

Anyone have any idea on how I can get the 9.1 Beta on my 6s+???~??

Thanks!

Rob

Just go to the Apple site in Safari on your phone. Download the beta profile, then update to 9.1 beta 2. After that either connect to iTunes and restore from backup or erase all settings and restore the backup from my iCloud. I did the later and it worked fine.